Canberra wrecking ball Josh Papalii is hoping his brutal man-of-the-match performance against North Queensland has earned him another crack in the Maroons jersey for the State of Origin decider.

Papalii only experienced 11 minutes of game time in his debut Maroons gig in Origin II, then backed that up with an underwhelming 97-metre performance two days later against South Sydney.

But the 21-year-old enforcer had the perfect audition in his side's 26-18 win over the Cowboys in Canberra on Sunday when he lined up against a big pack that included current Test props James Tamou and Matt Scott.

And the backrower didn't fail to fire, making 158 metres in attack and scoring a brilliant solo try where he brushed off Maroons team-mate Johnathan Thurston before stepping over the full-back.

Papalii's team-mate David Shillington was another standout for Canberra in the win.

Shillington was dropped from the Maroons squad for Origin II at the expense of Papalii, but has averaged an impressive 157 metres in the three games since his dumping.

Shillington's early go-forward up the middle helped his side burst out of the blocks to stun the Cowboys with three first half tries, and he finished the match with the most metres (167) and runs (17) for the Raiders.

Free trade is the oldest argument in federal politics and the issue that literally defined the federation era but opposition exists to the TPP, courtesy of the Investor-State Dispute Resolutions clause.